Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsMarathon Steel Navigator SSNAV Auto
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
Steel Navigator SSNAV Auto41mm
Power Reserve
Sea Storm MK2 GMT40h
Steel Navigator SSNAV Auto40h
Water Resistance
Sea Storm MK2 GMT300m
Steel Navigator SSNAV Auto60m
MSRP
Sea Storm MK2 GMT$415
Steel Navigator SSNAV Auto$1,300
Full specifications
Case
7 specsCategory
Diver
Pilot
Diameter
41.50mm
41mm
Thickness
14.15mm
11.5mm
Lug-to-Lug
48.50mm
48mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
60m
Crystal & Dial
1 specsLume
BGW9
None
Movement
1 specsCaliber
NH34
Sellita SW200-1
Pricing
1 specsMSRP
$415
$1,300
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